Where did you find that Willy Johansson worked for Orrefors? I remember we talked about this before but I can't find the topic immediately. Neither can I find that in any of the Orrefors or Scandinavian books I have, which all state that he worked full time for Hadeland for most of his life. It doesn't look his work very much, either.
Interestingly, Modernistglass.com, who are pretty reliable, describe one of the pieces they sold this way:
"It's Swedish art glass from the town of Orrefors. This one isn't signed but a couple of other pieces in this design that we have owned (one in the same jet black) were signed and/or stickered FA.W.Johansson Orrefors. "FA" in Swedish stands for "Firm". The firm of W.Johansson was a business that bought and sold glass. We're not sure if it was only from Orrefors or from other glass factories and studios as well. Its founder was, a former hairdresser named W Johansson. They had their own engravers and marked most of the pieces that they sold with signatures and stickers."
Shineyobjects: if you could provide the number of the bottom, then we could see if it matches anything in the Orrefors output.